Mining-machine.



C. E. DAVIS. lvuNxNG MACHINE.- VAmmo/mon man 0 cT..1910.

Patented Oct. 29, i915.

2 SHEETS SHELT l C, E'. DAVIS. MINING MAchiNE, APPLCATION FILED'OCT. 619H)A rammed oet. 29, i915.:-

CHARLES n, DAVIS, or onrcaeo,

mmm,

ILLJENOIS, ASSIGNOR TO GOODMAN IVANUFLCTURING COMPANY, OF CHCAGO, ILLES?01S, a CORFRATL'ON Ol LLINDS.

ToeZZ whomiz' may concern.' i Be it known that l, CHARLES E. Davis, acitizen. of'the United States, residing at Chicago, in the county `ofCook and State of Illinois, have invented a certain new and usetulimprovement i 1n li1n1ng-'Ma`cnines,

of which the following is a specification.

This invention relates to mining inachinos, and has for its objecttoprovide a new and.'11nproved machine of this descr1ption.

The invention is illustrated in the accompanying. drawings, wherein`Figure .l is a plan View of a machine ernbodying the invention; W

Fig.v 2 is a sidev elevation of the device shown in Fig. 1;

Fig. 3 is a sectional View taken on line 3-3 of Fig. l; v

Fig. 4 1s a sectional View takenl o n llne 'Li-.inf rig. s.

' Like numerals refer to like parts throughout the several figures.

The mining machine herein shownV is ot the type havi'nga forwardlyprojecting,r cutvter arm 1 provided with an endless cutter chain 2,,which passes around a sprocket Wheel 3 at theA front end of the cutteranni,

and'a sprocket wheel i at the rear end thereof, and is driven hy meansof a motor 5.' The machine provided with a suitahlel frame, upon whichthe motor and associated parts are mounted, andthe cutter arm l isconnected with this frame'. The frame normally rests upon the door ofthe mine and the entire' trame and cutter arm move 'together when themachine is in operation, said movement. heim?r produced hy a cableconnected with a-iXed part outside otthe n'niehine, hereinafterexplained. The n'lachine is first n'ioved longitudinally so as to makethe iirst cut or entry into the coal, and is then moved laterally alongthe lface ot the coal. in the device shown the machi'if is ted hy'meansot a flexible power transmitting device (3, which passes over adrinn 7 operated by the motor', and which is connected to astationarypart. When it is desired to make the first cnt or entry into the coal,the power transmitting device 6 is connected to a stationary part 8,arranged in such pfisition as to cause the machine to moveiongiturllinaily when the drum is rotated. This device tends to producea lateral movement of the cutter arm, and the Specification et Letterslatent.

also tend to produce a. lateral movement. of the cutter arm. In order toprevent this lateral movement l provide the' cutter arm with two guidesor beams 9 and 10. Between these lloeanis there is provided a guidingdevice having,` a guiding part ll and a position, the shoe l2 engagingthe ground.

The machine can then be moved forward, butwill be held against lateralmovement. The part ll is preferably inclined as shown in 4, saidinclination being in the direction toward which the action oi. thecutters tends to move the cutter arm. lt will he seen th at thisinclination ot' the arm gives the jack a greater capacity to resistlateral movement of the machine. YWhen the ma@ chine starts forward theguiding. device will he at the front end or' the cutter a-rni, and whenthe torward cut is tinished, it will he at the rear end ot the cutterarm. The cutter chain bears against thevouter surfaces of the beams 9und l0. Each liealn therefore has two hearinpq surfaces, one an outerhearing,l surface tor the cutter chain, and the other an inner hearing`surface Lfor the zduiding?y device. Such beams, therefore,r have aplurality oi tum-tions. They act as thet'ranie Jfor the cutter arni, asa guide for the cutter chain, and as a `fuide for the ,quiding device. fritter the forward cut. has been inade, so that the cutter arm projectsunder `the coal and the machine is ready to he moved laterallytoundercut the coal, the

V,guiding part is rendered inoperative. This Vinto the iframe et themachine, so 'that it Patented t?, 19118., Application le. October G, ti.Serial Die. 585,543.

'cutting parts of the chain engaging thecoal i soV is over a part ot themachine, namely, the

'hase 14, and under another part of the maas shown in Fig. This guidingdevice is, therefore, part o the machine, remainswith themachine, and isentirely out of the *waywhen' not in use, so that it does not, striketiiecoal as the.

chine,

machine is moved laterally in doing its work. When it desired to feedthe ma chine laterally across the iace oli the coal, the powertransmitting device G moved out to one side of the machine and fastenedto a suitable fixed support, and the rota,

i opening may be simply a hole through which the upper end of part ll.projects so that said part 1I and the shoe l2 will be connected with theguard through -the connecting piece 4G, and will 'anse said' guard tomove back into the machine as the machine moves forward to make itsinitial cnt. This connection is such that the shoe and part 1]. may beremoved when desired. This `guard is arranged so as to slide back intothe frame ci' the machine as the cutter chain is moved forward, as shownin Fig. The side'pieces`a5 slide in guides iii" (see Fig. i). I providethe guiding part ll with a pivoted latch 48, adapted to engage thecutter arm, so to loclc the guide and cut-f ter arm together when it isdesired to more the machine from place to place, The latch 484isprovided with an upwardly turned end 19, and the -iack 13 has a beveledface 50 which engages the upturned end eff), so to move the latch i8 todisengage the parts by the mere placing of the jack i3 in posi-- tion.There is infovided a series of guide wheels, 5l, for guiding theflexible power transmitting device (S, so that it may be led away fromthe machine in various directions.

Vv'hen 'the cutters of thecutting chain are cutting' the coal, and thefeeding' de vice is in. operation, some suitable retarding device shouldbe used to prevent the rear end ot the machine from being` ted forwardtoo rapidly, due to the fact that the resistance to the feed at the'l'orwaid end ot' the machine. Any suitable means for this purpose mayhe provided. herein shown a flexible power transmitting device, 55,

passes over a drum, 52, and is connected to a fixed part, located at asuitahle point. A brake device, 54, is associated with the drum toresist its rotation as desired to hold the machine in proper positionwhen in operation lVhen it is desired 'to more the machine about fromplace -to place, the shoe l2 is moved up to the end of the cutter arm,as shown in Fig'. and the lockingpart automaticallyv engages Clie armso` as to loch the shoe and arm against relative movement. "he shoe thenacts to hold the end of the cutter arm. up so 'that neither it nor thecutters will be injured as the machine is moved about.

It will be seen that in this device the entire mining` machine is' movedforward to malte the initial. cut-and is 'then moved laterally to makethe rest lof the cut, and that the cutter arm has ltwo parts connectedtogether at one end,"l namely, the parts 9 and l0, said parts beingseparated between their ends by a space, and that the cutter chainextends around the cutter arm, the ,outer taces of said parts engagingsaid cutter chain so to limit the inward movement of the opposite sidesof the chain, there being a guiding device extending between the innerfaces oi said parts and adapted when in its operative position to holdthecutter arm and chain against lateral movement.

lt will further be noted that the part 9, for example, when the chain isarranged as shown in Fig. l, resists. the lateral pressure of the chainwhen. cutting, and that the guiding de 'ice engages the other side ofthe part 9 when 'the machine is making its initial out so as to resistthe lateral pressure of the erin.

il claim:

l. A mining machine comprising a cutter arm adapted toV movelongitudinally, and comprising' two longitudinally extendingsubstantially parallel beams connected' to- `@ether at one end andforming the main meinbers of the cutter arm, said beams separatedbetween. their ends by a space, a cutter chain extending around the saidCutter arm and movable with relation thereto, the outer faces of saidbeams engaging; said chain so as to limit the inward movement of theopposite sides of the chain, a guiding device extending,- between theinner faces of said beams and adapted when in its operative position. toengage an inner surface thereof to hold the cutter arm and lateralmovement.

2. A mining machine comprising,r a cutter arm adapted to movelongitudiifiallv and tli'cn laterally7 in making its cut, said cutterarm comprising two longitudine. ly extend ingr snbstantiallyr parallelbeams connected together at one end yand forming,r the main members ofthe cutter arm, said beams sep arateddictween their ends by a space, acutter chain extending' around said cutter arm `and movable withrelation thereto, the outer faces of said beams engaging' said chain soas to limit the inward movement of the opposite sides ofthe chain, aguidingr device 4.

extending` between the inner faces of said beams and adapted when in itsoperative position to enga ge an inner surface thereof, to hold the armand chain against lateral movement, said guiding device movable chainagainst Lasagne with relation to said machine so thatit may be moved toan inoperative position when the cutter arm is moving laterally.

3. A mining machine comprising a cutter arm adapted to move'longitudinally `and then laterallyin making its cut, said cutter armhaving a .beam extending longitudiv .nallly therealong and forming oneof the mam members of the cutter arm, a cutter chain extending aboutsaid cutter arm and engaging tlie:.outer face of said beam'when the armis moving laterally, said beam resisting the lateral pressure of thechain when cutting, a guidingdevice projecting above and below said armand engaging the other side of said beam when the cutter arm is movinglongitudinally so as tol resist the lateral pressure on the arm when thechain is cutting, said'guiding device engaging the fixed surface beneathsaid cutter-arm.

4. A mining machine comprising a cutter arm adapted to movelongitudinally and then laterally in making its cut, said cutter armcomprising two beams extending longitudinally therealong, each of saidbeams -provided at opposite .sides thereoic with flanges', a webintermediate saidfiianges and connecting them together, a cutter chainextending around said cutter arm and env gagii'ig` the' face of one ofsaid flanges on each of said beams, the other flanges of said beamsbeing opposed to each other and being separatedby a space, a guidingdevice in said space between the latter flanges of said beams, said'guiding device having a portion which engages the fixed surface underthe cutter ariIrand means for-,corrnecting the other end of said guidingdevice with a fixed part so as to hold the guiding device stationarywhen the cutter arm is moved longitudinally.

A mining machine comprisinga frame, a cutter arm connected therewith andprovided with two guides separated by a space, a guiding device` betweensaid guides projecting above and below said guides' and adapted to befixed in position so as to permit the cutter arm to be moved forward butprevent its lateral movement, said guiding device separate from theframe,- a ysupport connected with said frame near the rear end of thecutter arm, upon which said guiding device is carried when not in use.

6. A mining machine comprising a frame,

a cutter arm connected therewith, said cutter arm having' a slotextending therealong, a shoe connected with said cutter arm so as toslide therealong and having a' part project ing into said slot, meansfor automatically connecting the shoe with the front end of the cutterarm so as to prevent relative movement of the two.

T. A mining machine comprising a frame, a cutter arm connectedtherewith, a slice connected with said cutter arm so as to slidetherealong. means for automatically connecting the slice with the cutterarm so as to prevent relative movement of the-tivo., a device forexerting pressure on said shoe, adapted when in position toautomatically disconnect the shoe' from said arm.

8. A mining machine comprising a frame, a cutter arm connectedtherewith, a shoe adapted to engage the surface beneath said cutter arm,an upwardly projecting part connected with said shoe and engaging saidcutter arm, a movable locking part cbnnected with said upwardlyprojecting part and adapted to engage said arm and lock the shoe and armtogether, a removable piece adapted to be connected with saidupevardlgvi projecting part and which, when ilaced in position, engagessaid locking part so as to automatically move it to an inoperativeposition.

9. In a mining machine, the combination of a movable bed frame, a cutterbar having xa longitudinal slot rigid with the bed iframe and projectingfrom the inner end thereof, a cutter chain supported on and guided by.the cutter bar, a guideldevice adapted to extend through the slot of thecutter bar and be secured in position bv engagzfementA with the fiooratl its lower end and with the roof or coal face at its upper end, adraft rope, rotary mechanism on the bed frame .cooperating with thedraft rope to create a tension therein., said rope being adapted to becarried inward from thebed frame to a 'ilxed abutment so that itstensioijt will tend ltoadvance the machine as an entiretylongitudinally, and means on the bed frame for driving the cutter chainand the said rotary mechanism. Y

vSigned at Chicago, Illinois, this 15th day of September, A.D. 1910.,

l l CHARLES lll. DAVS.

Witnesses EDN. K. REYNOLDS,

MINNIE M. LINDENAU.

icc

